I have a 98 Mustang GT with 53000 miles and no mods and I wanted to know if I needed to use premium gas or if I could use regular 87 octane without harming my engine? Are there any major drawbacks to using regular? Was the car designed to be use reg or premium fuel? Thanks for the help

 

Ford recommends 87 octane. Unfortunetly, in my area I cannot run 87 without severe pinging at WOT...</P>


I can get away with 89 though. No harm done in running premium either..</P>

 

87 is recommended by Ford, but once you put a chip in it...premium<IMG src=smileys/smiley16.gif border="0"> <edited><editID>GSXRIntensity</editID><editDate>37885.0912384259</editDate></edited>

 

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It cracks me up when someone puts a new chip in a stock car. I just wanna smack'em <IMG src=smileys/smiley11.gif border="0"></P>

 

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Gixxer's current purchased mods:</P>


Magnaflow cat-back, Bassani x-pipe, Bassani ML headers, C&amp;L M.A.M. w/true flow pipe, C&amp;L intake plenum (should be here by Wed), K&amp;N air filter, FRPP 70mm throttle body, March Performance pulleys #1190, Eibach pro-kit (1.5in drop), Pro 5.0 shifter</P>


Gixxer's soon to be purchased mods:</P>


MSD ignition, AL DS, either a 3.73, or 4.10, &amp; a dyno tuned chip.</P>


Soo much for smacking this "stock" Stang driver<IMG src=smileys/smiley2.gif border="0"></P>

 

Haha, that wasn't a jab at you bro. </P>


That was a jab at the retards who's first mod is a chip.</P>

 

i have an 02 brought it brand new and been running 93 oct in it since day 1 the higher the oct u use the better performance u get and u r less likely to have detnation and pinging

 

Nope, no performance gains to be had by running premium fuel when you don't need it. You won't get better gas mileage or any more hp by doing it. All octane rating is a formula that calculates the fuels ability to resist detonation, not fuel quality. </P>

 

You are correct, sir!

 

all cars can run on 87 unless noted by the manufacture...with timing @ 10 89 octane is a good choice.... higher compression engines will benifit from the high octane...as a poorly maintaned car might need higher octane due to carbon build up and a slight raise in compression....personally I never run 87 in anything I own not even my lawn mower *L*
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